Door-check.



H. A. KENDALL.

DOOR CHECK.

. APPLICATION FILED 001228, 1912. 1,074,798, Patented Oct. 7, 1913.

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ZuzZnesses jm/ nzor ,AziM 39M TINITE @ATES PATENT HUBERT A. KENDALL, OF KANSAS CITY, MISSOURI.

DOOR-CHECK.

Application filed October 28, 1912.

To all whom it may concern Be it known that I, HUBERT A. KENDALL, a citizen of the United States of America, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Door-Checks; and I do hereby declare that the following is a full, clear, and exact declosing of screen doors which are closed by the ordinary spring hinge; and Third: To overcome the noise from the impact following the closing of the door after the rebound of the screen door from any check.

The invention consists in the novel construction and combination of parts, such as will be first fully described and then specifically pointed out in the claims.

In the drawings: Figure 1. is a broken, isometric View of portions of a door casing and jamb, and of the free or outer swinging portion of a screen door, taken from the inner side of the door, and showing the invention applied to the door and easing. F ig. 2. is a front view of the casing and jambs, as secnin Fig. 1, and of the inner surface of the portion of the bar forming a part of the outer, swinging portion of the screen door, showing the portion of the door when first checked, in dotted lines, and the invention normally as in Fig. 1. Fig. 3. is a horizontal, sectional view, taken upon the line 00, m, on Fig. 2, looking downwardly, and showing a plan View of the invention. Fig. 41-. is an isometric view of the novel check operating or abutting device on the door; and Fig. 5. is a view in perspective of the novel door check, taken from a reverse side to that seen in Fig. 1. Fig. 6. is a horizontal, sectional view, taken on line y, y, on Fig. 2.

Similar numerals of reference indicate corresponding parts in all the figures of the drawing.

Referring to the drawing, 10 and 11 indicate the respective outer and inner casing strips, and 12 the door jamb upon the side of the door opening, opposite to that to which the inner portion of the screen Specification of Letters Patent.

Patented Oct. 7, 1213.

Serial No. 728,302.

door is ordinarily hinged, the inner surface of the outer casing 10 being a slight distance in rear of the line of the forward surface of the jamb 12, and consequently forming a shoulder 14-, against which the inner side and outer, swinging portion of the screen door comes violently into contact, and occasions a loud noise.

15 indicates the novel door check, which consists of a pivoted body or block, preferably made from india rubber, or such substance as felt, which affords the desired elasticity. Through the upper portion of the body of the door check extends a circular opening 16, for the entrance of a screw bolt 17, by means of which the door check is secured to the door jamb 12, thus permitting the lower portion 18 a free, swinging movement on the screw bolt. This lower portion 18, of the body-of the door check, is narrow in width and extends downwardly from a horizontal line extending through the opening 16, a considerable distance, the sides of said portion being in vertical lines, the lower end of said portion 18 being curved at 19, in the arc of a circle. From the vertical lines of the sides of said portion 18, of the door check, upon the horizontal line extending through the opening 16, extends in opposite directions the cross arms 20 and 21. Extending upwardly a short distance from a point above the horizontal line extending through the opening 16, and upon the outer surface of said portion 18 of the door check, is an upward-extension or lug or offset 22, the upper surface of which is inclined down wardly in opposite inclined planes from the apex 23 and upon each side of a vertical plane passing through the opening 16, and transversely throu h the body 18, of the door check, the apex 23 of the upward extension 22 of the door check forming the contact point for the abutment further described. Upon the inner surface of the body portion 18, of the door check, and extending around the opening 16, is formed a boss 24, which comes into contact with the outer surface of the door jamb 12.

In the attachment of the door check to the door jamb, the screw bolt 17, which has a head 17*, is inserted within opening 16 and then into the door jamb, the opening 16 being reamed so as to permit the head 17* to come flush with the outer surface of the portion 22, the attachment, however, being made in such relation to the door amb that the outer surface of the arm 20 will extend a slight distance past the line of the shoul der 14:, as seen in Fig. 3, so as to require a slight pressure on the arm, in order to fasten the door at all times.

The operating or abutting device consists of a narrow strip of rigid material, such as a steel wire bent at a point one-third of its length, in parallel lines, a short portion.

of the wires at the point of binding being bent downwardly at 26. The inner end of the main wire stem is screw-threaded at 28. The inner end of the other wire stem 25 is bent at a point near the screw threaded portion 28, of the main stem, at right angles, and extended outwardly a short distance, thence bent at 27*, at right angles and extended forwardly a short distance, thence bent at 27, and a portion of the wire extended in a transverse direction over the stem 25, and the main stem to a point 27 at which point the wire is bent at right angles and extended rearwardly to a point 27, transversely to the screw-threaded portion 28, on the main stem, and thence bent at 2'7 and extended to said screw-threaded portion of the main stem, thus forming two lateral extensions 27.

30 indicates the vertical bar at the outer portion of the door forminga part of the screen door frame, or any ordinary door frame, a portion of the wire screen 81. being shown, which is sufficient for illustration.

The threaded stem 28 is screwed into the inner side of the bar 30, at a point horizon tally above the'door check and the offset 22, and with a slight contact with the apex 23,

the narrow portion 25 being of the proper length to permit the downward extension 26 to come into contact with the apex 23, of the offset 22 of the door check, and move the lower portion 18, of the door check into a horizontal, outward position, as seen in dotted lines in Fig. 2, before releasing its contact with the door check.

In operation the arm 20, of the door check, being in the position as seenin Fig. 3, the opening of the door causes the downward extension or head 26, on the strip 25,

p to impart an inward, swinging movement to the lower portion 18, of the door check, its gravity causing the door check to instantly return to its normal, vertical position. Upon the closing of the door the downward extension 26, of plate 25, comes into contact with the opposite inclined surface of the offset 22, and the curved end 19 of the portion 18, of the door check, meets the bar 30 and retards its movement, and upon the instant drops in position and the arm 20 meets the bar 30, and checks the door without noise. The stem 25 when the door is closed has normally a slight frictional contact with the apex and'acts to restore the door check to its normal position. When the door is closed with violence, the described action of the door check is almost instantaneous, the lateral extension 27 preventing any liability of a revolution of the door check when struck forcibly by the plate 25. The door check being provided with double arms 20 and 21, enables the door check to be applied to the right or left hand side of a door casing, and in like manner the abutting device 25, having thelateral extensions 27, enable its application to the outer, swinging portion of a door whether swinging to the right or left.

I am aware that elongated pivoted butters have been employed upon the door casing with a striker on the door in line with the short end of the buffer, the upward movement of the buffer being retarded by the stem of the striker upon the closing of the door. In my invention I aim to accomplish bufier member, the upward extension of the 1 buffer element being upon its outer face portion and above'the line of its pivot so that the swinging buffer member accomplishes two results, first, that of checking the door upon first closing and secondly, by means of the cross arms the rebound of the door. It may also employthe bufierwithout the cross arms, but with. the upward extension or lug upon the outer face of the louder, the complete reaction of the'buifer being prevented by the lateral'extension of thestems 25, 25'. r

' It is obvious that the invention may be applied to the checking of all kinds of doors,

as well as screen doors, and without the use of the abutting device, and such modifications employed as are within the scope of the appended claims.

Having fully described my invention,

what I now claim as new and desire to;

secure by Letters Patent is:

1. The. combination in door checks with the stationary member, a movable member, a pivoted normally-pendant swinging member provided with cross arms, one of whichcoacts with the said movable member to check the rebound of the movable member, an upward extension of the swinging member upon its outer face portion extending above the line of its pivoted upper end and an abutting device on the movable part adapted to tilt the swinging member into a door checking position.

2. The combination in door checks with the door and its casing, of a pivoted swinging resilient member on the door casing and an upward extension upon its outer face portion and an abutting device on the door in the path of said upward extension adapted to tilt the swinging member into a door checking position, and a cross arm or arms upon the swinging resilient member adapted to check the rebound of the door.

3. The combination in door checks with the door and its casing of a pivoted swinging resilient member on the door casing and an upward extension upon its outer face portion extending above the line of its pivoted upper end an abutting device on the door in the path of said upward extension adapted to tilt the swinging member into a door checking position, and a cross arm or arms upon the swinging resilient member adapted to check the rebound of the door, and lateral extensions of the abutting device adapted to check the upward movement of said arms in their path of rotation.

HUBERT A. KENDALL.

Witnesses:

ROBERT O. MoLIN, ANNIE L. GREEK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. C. 

